Geometric effects on micropolar elastic honeycomb structure with negative Poisson's ratio using the finite element method

Yang, Der Uei; Lee, S.; Huang, Fuang Yuan

doi:10.1016/s0168-874x(02)00066-5

Cited by 72 publications

(48 citation statements)

References 12 publications

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“…Figure 8 and 9 reveal the cell geometric parameters varying from -0.01° to -0.06° for angle, 5.985-6 mm for thickness and 39-40 mm for width, maximize the ultimate strength (MPa) of the auxetic structure. The variations of optimal ultimate strength closely agree with the FEM investigations carried out by Yang et al 5 . The authors reported that the larger the cell width is, the greater the values of structural Poisson's ratio are.…”

Section: Resultssupporting

confidence: 89%

“…In 1987, Lakes made the first discovery about the negative effect of Poisson's ratio designing a polyurethane foam (PU) with reentrant structures, which was named by anti-rubber, auxetic or dilational 4 . In recent years, the studies related to auxetic structures were mainly focused on the estimation of effective properties as a function of geometric dimensions 5 , density variations 6 , electromagnetic 7 , acoustic and mechanical properties 8,9 , and the ability to absorb vibrations 10 . The existence of a material having a negative Poisson's ratio means achieving non-conventional mechanical behaviour, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Besides the environmental issues, elastomers offer singular properties such as, low density, electrical insulation, high chemical resistance, high toughness and vibration absorption, making them a potential promise phase for polymeric auxetic structures 22 . According to the theory of cellular materials 3,5 , the mechanical properties of a cellular solid can be described by geometric parameters of the unit cell and the mechanical properties of the manufactured material. Some researchers have attempted to improve composite materials with negative Poisson's ratios using different optimization methods [23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

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Geometric effects of sustainable auxetic structures integrating the particle swarm optimization and finite element method

et al. 2014

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The development of new materials based on industrial wastes has been the focus of much research for a sustainable world. The growing demand for tyres has been every year exacerbating environmental problems due to indiscriminate disposal in the nature, making a potentially harmful waste to public health. The incorporation of rubber particles from scrap tyres into polymeric composites has achieved high toughness and moderate mechanical properties. This work investigates the geometric effects (thickness, width and internal cell angle) of auxetic structures made of recycled rubber composites based on experimental and numerical data. The response surface models integrated with the swarm intelligence and finite element analysis were proposed in order to obtain a range of solutions that provides useful information to the user during the selection of geometric parameters for reentrant cells. The results revealed the cell thickness ranges from 39-40 mm and 5.98-6 mm, and the cell angle range from -0.01 to -0.06° maximize the ultimate strength. The same parameters were able to optimize the modulus of elasticity of rubber auxetic structures, excepting for the angle factor which must be set between -30° and 27.7°. The optimal Poisson's ratio was found when the cell angle ranged from -30° to -28.5°, cell width ranged from 5-5.6 mm and 2 mm in thickness.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geometric effects of sustainable auxetic structures integrating the particle swarm optimization and finite element method

et al. 2014

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“…To date, most of the NPR materials are studied based on certain re-entrant, chiral structures, and rotating units [5,[18][19][20]. These basic units are usually periodically and symmetrically assembled [17,[21][22][23][24], according to their deformation mechanism and orientations to provide the NPR effects. Although these materials could extend the NPR behavior of the basic units to the overall materials, the overall NPR effects are limited to certain directions.…”

Section: Introductionmentioning

confidence: 99%

A composite material with Poisson’s ratio tunable from positive to negative values: an experimental and numerical study

Silberschmidt

2013

J Mater Sci

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“…This is true, for example, reentrant, chiral, star-shape structures and rotating units [2][3][4][5][6]. These structures, known as skeletal structures, are well studied, and most of them are periodic and often symmetric as well [7][8][9][10][11][12][13][14][15]. In these structures, the NPR effect only occurs along certain in-plane directions, and the concept of NPR is hardly used in 3D space.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of composite structure with in-plane isotropic negative Poisson’s ratio: Effects of materials properties and geometry features of inclusions

Hou

Silberschmidt

2014

Composites Part B: Engineering

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A novel composite structure with isotropic negative Poisson's ratio has been presented in our previous paper [1]. However, the previous study has only focused on the effects of random inclusions. In this work, an extended numerical study on the effects of materials properties and geometry features of inclusions is conducted in order to better understand the deformation mechanism and mechanical properties of this kind of composites. Using finite element method, the overall negative Poisson's ratio effects and mechanical properties of the composites are analyzed in terms of different factors including thickness and stiffness of inclusions with uniform and non-uniform struts. The structure optimization of the composites with better negative Poisson's ratio effect and mechanical performance are discussed based on the numerical calculated results. The study shows that the Poisson's ratio effects and mechanical properties of the composites are significantly affected by geometrical features, stiffness and boundary conditions of inclusions.

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Geometric effects on micropolar elastic honeycomb structure with negative Poisson's ratio using the finite element method

Cited by 72 publications

References 12 publications

Geometric effects of sustainable auxetic structures integrating the particle swarm optimization and finite element method

Geometric effects of sustainable auxetic structures integrating the particle swarm optimization and finite element method

A composite material with Poisson’s ratio tunable from positive to negative values: an experimental and numerical study

Numerical analysis of composite structure with in-plane isotropic negative Poisson’s ratio: Effects of materials properties and geometry features of inclusions

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